21180354

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 48263040

約数和(自身を除く): 27082686

約数列:

[1, 2, 3, 6, 13, 26, 37, 39, 41, 74, 78, 82, 111, 123, 179, 222, 246, 358, 481, 533, 537, 962, 1066, 1074, 1443, 1517, 1599, 2327, 2886, 3034, 3198, 4551, 4654, 6623, 6981, 7339, 9102, 13246, 13962, 14678, 19721, 19869, 22017, 39442, 39738, 44034, 59163, 86099, 95407, 118326, 172198, 190814, 258297, 271543, 286221, 516594, 543086, 572442, 814629, 1629258, 3530059, 7060118, 10590177, 21180354]

約数ペア:

[(1, 21180354), (2, 10590177), (3, 7060118), (6, 3530059), (13, 1629258), (26, 814629), (37, 572442), (39, 543086), (41, 516594), (74, 286221), (78, 271543), (82, 258297), (111, 190814), (123, 172198), (179, 118326), (222, 95407), (246, 86099), (358, 59163), (481, 44034), (533, 39738), (537, 39442), (962, 22017), (1066, 19869), (1074, 19721), (1443, 14678), (1517, 13962), (1599, 13246), (2327, 9102), (2886, 7339), (3034, 6981), (3198, 6623), (4551, 4654)]